Keith 'BK' Melrose is the only Scottish member of the Acorn Café.
He is often seen as a modern day spokesman for the 'anti' movement, despite having only arrived at the Acorn Café in late April 2006. Some have even gone as far as to say that BK is more radical than the legendary anti Julie Bihn, although it is worth pointing out that none of those to make this claim have ever met Ms Bihn.
Like many patrons at the Acorn Café, BK has a 'furry character' which is occasionally used. He assumes the guise of a tall, broad-shouldered, kilted rat, with both a temper and a strong sense of humour.